Tag Archives: THEMIS

THEMIS: Cyane Fossae on Alba Mons

THEMIS Image of the Day, June 21, 2019. This VIS image shows lava flows from Alba Mons, and a tectonic graben called Cyane Fossae. It is thought that the linear depressions that surround Alba Mons were created by a huge … Continue reading

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HiRISE: Mind your deposit

Mind your deposit. The CRISM instrument on MRO (a spectrometer) has detected clay deposits here that is a very uncommon sedimentary setting. HiRISE Picture of the Day archive. [More at links]

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THEMIS: Shalbatana Vallis

THEMIS Image of the Day, June 20, 2019. Today’s VIS image shows a section of Shalbatana Vallis. Along side of the major channel is a smaller tributary channel. A landslide deposit is also visible in this image. Explore more THEMIS Images … Continue reading

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THEMIS: Crazy craters

THEMIS Image of the Day, June 19, 2019. Today’s VIS image shows two craters located on the margin of Syrtis Major Planum. The two large craters are not circular. The flatter sides are caused by the pressure wave generated by … Continue reading

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THEMIS: ‘Blizzard’ of dust devil tracks

THEMIS Image of the Day, June 18, 2019. Wind is one of the most active processes on Mars today. This image was taken near Hooke Crater on the margin of Argyre Planitia. These micro-tornados, which form similarly to their counterparts … Continue reading

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THEMIS: Small graben in Acidalia Planitia

THEMIS Image of the Day, June 17, 2019. This false-color image shows a graben located in Acidalia Planitia. Graben are depressions caused by movement of material downward between paired tectonic faults. The THEMIS VIS camera contains 5 filters. The data … Continue reading

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THEMIS: South polar layers

THEMIS Image of the Day, June 14, 2019. This VIS image shows part of the south polar cap. The numerous layers that comprise the polar cap are readily visible. The cap was built up over millions of years of deposition … Continue reading

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Mars’ water-ice clouds thicken toward evening

[Editor’s note: From a paper by Michael Smith recently published in Icarus.] Local time variation of water ice clouds on Mars as observed by THEMIS • The local time variation of cloud optical depth is examined from THEMIS observations. • … Continue reading

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THEMIS: Tectonic traces in Amenthes Fossae

THEMIS Image of the Day, June 13, 2019. The two linear depressions crossing this VIS image are graben created by tectonic activity. Explore more THEMIS Images of the Day by geological subject.

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THEMIS: The graben of Ceraunius Fossae

THEMIS Image of the Day, June 12, 2019. This VIS image shows part of Cerunius Fossae. The linear depressions are fault bounded features called graben. These features form from tectonic forces that are pulling apart the surface, created space for … Continue reading

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